Last year 82 million cards were recycled through the scheme, raising enough money to help the Woodland Trust plant 20,000 trees across the UK. This year's target is 90 million cards.

Janice Hix of the Woodland Trust said: "Many of us have put cards to one side to take to the recycling bins but haven't quite got around to it yet. We're appealing for everyone to drop them off by January 31.

For information about the scheme, run in partnership with Recycle Now, visit www.woodland-trust.org.uk/cards